The 1 m close-in (CI) free space reference distance path loss model (REF ) (with parameters derived from 142 GHz outdoor field measurements in a UMi environment in downtown Brooklyn [1]}, [2]}) is used for the link budget calculation:
\(\small \begin{split}PL^{CI}(f_c,d_{\text{3D}})\;\text{[dB]} &= \text{FSPL}(f_c, 1 m) +10n\log _{10}\left( \dfrac{d_{3D}}{d_{0}} \right)+ \chi _{\sigma },\\\text{FSPL}(f_c,1 m) &= 32.4 + 20\log _{10}(\dfrac{f_c}{1\;\text{GHz}}),\end{split}\) 
